In the latest study of a section of the well core from the interior of the Qinghai-Xizang(Tibet) Plateau,the authors found the last 32 ka paleoclimatic change from the record of lake sediments of the Goulong Co in the Hoh Xil area by using the sequence stratigraphic and chronostratigraphic approaches, combined with the cli-matostratigraphic approach and recognized three climatic oscillation event of the Dryas period atdepths of 3. 32 to 1. 98 m of a well core, i. e. (1) the Oldest Dryas event (at well depths of 3. 32 to 2. 62 m), (2) the Older Dryas event (at 2. 62 to 2. 43 m) , and (3) the Younger Dryas event (at 2. 43 to 1. 98 m). All the three climat-ic oscillation events started with the dry and cold interval and ended with the cold and humid interval. The cold and dry interval became longer in the later part of the period, while the dry and humid stage shows a tendency of isochronic change. The variations of organic carbon, organic nitrogen, magnetic susceptibility and geochemi-cal element contents in core sediments all well coincide with the climatic change in the Dryas period. The re-sponse of the climate in the Dryas period in lake sediments is first discovered in the environmental evolution of the Qinghai-Tibet Plateau. This provides new information for the study of the climatic change since the deglaciation of the last glacial stage of the Quaternary.